I believe it is not a system issue but a people issue. Some will always instinctively react negatively to losing a roll or move, rather than seeing it as a narrative opportunity. Whatever the system, a loss state will always exist.
It's one of those things you always encounter as a GM. Having to remind people that they are supposed to be having fun, and that there is fun to be have in flaws, setbacks, mistakes and failures.
I'm not certain there is enough space in this format to lecture GMs on how to help people have fun. However, since the goal is to get people to play in the first place, there might be something to it.